This book contains a fiendish collection of over 150 mind games to tax your powers of logic in ways you had never thought possible! All kinds of logic problems are included in this Mensa-branded book that will ensure your brain cells never have a chance to rest! The book doesn't follow a structure - the puzzles are not in any particular order by type or difficulty - so the reader can never be sure what logical challenge lurks over the page.
When Axel deciphers an old parchment that describes a secret passage through a volcano to the centre of the earth, nothing will stop him and his eccentric uncle from embarking on a perilous, terrif...
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